What communication method is recommended for night diving?

The recommended communication method for night diving is the combination of hand signals and light signaling. This approach is effective because visibility is reduced in low-light conditions, making verbal communication difficult. Hand signals allow divers to convey essential messages clearly and efficiently without relying on speech, which may not be heard underwater.

Additionally, light signaling is a powerful tool during night dives. Divers can use dive lights to communicate by shining their lights in specific directions or using them to indicate particular signals, such as a search or attention signal. This method enhances visibility and allows divers to maintain communication even when they are at a distance from one another.

The combination of hand signals and light signaling promotes safety and allows for effective coordination between divers, which is crucial when visibility is limited due to darkness. Other methods, such as solely relying on verbal communication, underwater devices, or written communication, may not be practical or effective in the context of night diving.